A coal tar processing tank waste gas treatment device

Abstract

The present invention relates to a waste gas treatment device for a coal tar processing storage tank. When the waste gas introduced by a high-pressure gas pipe (21) passes through a contraction tube (22), the flow velocity increases and the pressure decreases. The pump body (24) is used to transport the purified liquid in the tank body (10) to the injection hole (23) and spray it toward the waste gas. Since the relative speed between the gas and liquid phases is very large, the high-pressure waste gas collides and contacts with the sprayed purified liquid. The purified liquid wets and captures harmful substances such as asphalt smoke and benzopyrene in the waste gas, and produces a condensation and absorption effect. The purified liquid that absorbs the harmful substances is passed into the purified liquid at the bottom of the tank body (10) along with the waste gas from the side hole (25) on the high-pressure gas pipe (21). The purified liquid is stirred in combination with a stirring component so that the harmful substances in the waste gas are fully contacted with the purified liquid. The waste gas then flows along the flow path to extend the flow stroke of the waste gas and its contact time with the purified liquid, thereby further improving the absorption and purification effect of the harmful substances in the waste gas.

Description

Technical Field

[0001] The invention relates to the technical field of coal tar processing, in particular to a waste gas treatment device for a coal tar processing storage tank. Background Art

[0002] Coal tar processing enterprises store asphalt, anthracene oil, industrial naphthalene, washing oil and other oil products in storage tanks. These stored oil products will emit asphalt smoke, H during processing, storage or loading and unloading. 2 S, BaP, naphthalene dust, ammonia and other waste gases, which contain more toxic and carcinogenic substances, need to be treated by waste gas treatment equipment before discharge, otherwise it will cause environmental pollution and affect human health.

[0003] The Chinese invention patent with the authorization announcement number CN220424833U discloses a coal tar processing waste gas treatment device, which intercepts and filters large particles and other solid impurities in the waste gas through a filter plate, passes the waste gas into a purification liquid for purification treatment and then discharges it. During this period, the stirring rod stirs the purification liquid so that the filtered waste gas is fully in contact with the purification liquid to improve the purification effect. However, the above scheme directly passes the waste gas into the purification liquid, and the contact between the waste gas and the purification liquid is still not sufficient, and the purification effect of the purification liquid on the absorption of harmful components in the waste gas is poor. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the existing coal tar processing waste gas treatment device directly passes the waste gas into the purification liquid, the contact between the waste gas and the purification liquid is still not sufficient, and the purification effect of the purification liquid on the absorption of harmful components in the waste gas is poor.

[0005] In order to solve the above problems, the present invention provides a waste gas treatment device for a coal tar processing storage tank, wherein an exhaust port is provided on a tank body containing purified liquid, a high-pressure air pipe for conveying waste gas is provided inside the tank body, a contraction tube is formed on the high-pressure air pipe above the liquid level, a spray hole is provided on the contraction tube, and a pump body for pumping purified liquid to the spray hole is provided on the tank body; a side hole is provided on the high-pressure air pipe below the liquid level, so that the waste gas is conveyed to the bottom of the tank body and fully contacts with the purified liquid, a partition assembly is provided between the high-pressure air pipe and the tank body, a flow passage is formed in the partition assembly to extend the flow range of the waste gas and the purified liquid, a rotating shaft is provided in the tank body, and a stirring assembly is provided on the rotating shaft located at the lower side of the partition assembly.

[0006] The coal tar processing tank waste gas treatment device provided by the present invention also has the following technical features:

[0007] The partition assembly includes an upper partition and a lower partition whose edges are connected to the inner wall of the tank body, a volute partition for forming a flow passage is provided between the upper partition and the lower partition, an upper opening is formed at the edge of the upper partition, and an annular lower opening is formed at the center of the lower partition, and both the upper opening and the lower opening are connected to the flow passage.

[0008] The lower partition is a conical plate with a larger upper portion and a smaller lower portion. A transverse plate is provided on the high-pressure air pipe, and the transverse plate is arranged between the lower partition and the stirring assembly.

[0009] A plurality of spoilers are correspondingly arranged on both sides of the volute partition.

[0010] The stirring assembly includes stirring blades and spiral blades. Multiple stirring blades are arranged at intervals along the circumference of the rotating shaft. Two spiral blades with opposite rotation directions are respectively arranged on the upper and lower sides of the stirring blades. When the rotating shaft rotates, the spiral blades push the exhaust gas and the purified liquid toward the stirring blades.

[0011] A disturbing body corresponding to the stirring assembly is arranged on the inner wall of the tank body.

[0012] A plurality of injection holes are arranged at intervals along the circumference of the contraction tube, the diameter of the contraction tube is smaller than the diameter of the high-pressure air pipe, a ring body is sleeved on the contraction tube, and a uniformly distributed groove connected to the injection holes is opened in the ring body. The input end of the pump body extends into the liquid surface, and the output end is connected to the uniformly distributed groove.

[0013] The number of the injection holes is 3.

[0014] The top of the tank body is open and provided with a cover plate, the cover plate is provided with a pump body and a motor, and the output end of the motor is connected with the rotating shaft.

[0015] A limiting protrusion is formed on the inner wall of the tank body, and a corresponding limiting groove is formed on the lower surface of the lower partition.

[0016] The present invention has the following beneficial effects: the flow velocity of the exhaust gas introduced by the high-pressure air pipe increases and the pressure decreases when passing through the contraction tube, and the pump body cooperates to transport the purified liquid in the tank body to the injection hole and spray it toward the exhaust gas. Since the relative speed between the gas and liquid phases is very large, the high-pressure exhaust gas collides and contacts with the sprayed purified liquid, and the purified liquid wets and captures harmful substances such as asphalt smoke and benzopyrene in the exhaust gas, and produces condensation and absorption effects; the purified liquid that absorbs the harmful substances is passed into the purified liquid at the bottom of the tank body from the side hole on the high-pressure air pipe along with the exhaust gas, and is stirred in combination with the stirring component so that the harmful substances in the exhaust gas are fully contacted with the purified liquid, and the exhaust gas flows along the flow path to extend the exhaust gas flow stroke and its contact time with the purified liquid, thereby further improving the absorption and purification effect of the harmful substances in the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an axonometric view of the present invention;

[0018] Figure 2 for Figure 1 A partial cross-sectional view of

[0019] Figure 3 Schematic diagram of the internal structure of the tank;

[0020] Figure 4 An exploded view of the structure of the separated components;

[0021] Figure 5 for Figure 2 A partial enlarged view of point A in the middle. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0023] like Figures 1 to 5 As shown, the waste gas treatment device for coal tar processing storage tanks of the present invention has an exhaust port 11 on the tank body 10 containing purified liquid, and is characterized in that a high-pressure air pipe 21 for conveying waste gas is provided in the tank body 10, a contraction tube 22 is formed on the high-pressure air pipe 21 above the liquid level, a spray hole 23 is provided on the contraction tube 22, and a pump body 24 for pumping purified liquid to the spray hole 23 is provided on the tank body 10; a side hole 25 is provided on the high-pressure air pipe 21 below the liquid level, so that the waste gas is conveyed to the bottom of the tank body 10 and fully contacts with the purified liquid, a partition component is provided between the high-pressure air pipe 21 and the tank body 10, a flow passage is formed in the partition component to extend the flow range of the waste gas and the purified liquid, a rotating shaft 26 is provided in the tank body 10, and a stirring component located on the lower side of the partition component is provided on the rotating shaft 26.

[0024] When the exhaust gas introduced by the high-pressure air pipe 21 passes through the contraction tube 22, the flow velocity increases and the pressure decreases. The pump body 24 cooperates to transport the purified liquid in the tank body 10 to the injection hole 23 and sprays it toward the exhaust gas. Since the relative speed between the gas and liquid phases is very large, the high-pressure exhaust gas collides and contacts with the sprayed purified liquid. The purified liquid wets and captures harmful substances such as asphalt smoke and benzopyrene in the exhaust gas, and produces condensation and absorption effects; the purified liquid that absorbs the harmful substances is passed into the purified liquid at the bottom of the tank body 10 from the side hole 25 on the high-pressure air pipe 21 along with the exhaust gas, and is stirred in combination with the stirring component so that the harmful substances in the exhaust gas are fully contacted with the purified liquid. The exhaust gas then flows along the flow path to extend the flow path of the exhaust gas and its contact time with the purified liquid, thereby further improving the absorption and purification effect of the harmful substances in the exhaust gas.

[0025] A control valve is provided on the exhaust port 11. A support frame 12 is provided at the bottom of the tank body 10, and a plurality of legs are provided on the support frame 12. A liquid inlet 13 is provided on the upper side of the tank body 10, and a liquid outlet 14 is provided on the lower side, and both are provided with control valves.

[0026] The purification liquid can be selected from washing oil to absorb harmful substances such as asphalt smoke and benzopyrene in the exhaust gas, or dilute alkali liquid to absorb SO 2 , H 2S and other harmful substances are absorbed and treated, and the specific selection can be made according to the actual application. Of course, before the harmful substances in the exhaust gas are absorbed by the liquid through this device, a bag filter or an adsorption device such as activated carbon, molecular sieve, etc. can be set to filter or adsorb industrial naphthalene dust in the exhaust gas. After the liquid absorption is performed by this device, an incinerator can also be set up, using combustible gases such as coal gas and natural gas as fuel, and the exhaust gas discharged from the exhaust port 11 is further incinerated through the burner set inside.

[0027] Among them, based on the diffusion principle, the purified liquid that has been contaminated by fully absorbing harmful substances will gradually diffuse into the uncontaminated purified liquid. A concentration detection module for harmful substances in the gas can be set above the liquid surface in the tank body 10 or at the exhaust port 11. When the concentration of harmful substances in the purified liquid exceeds a preset value, the absorption and purification effect of the purified liquid on the harmful substances in the exhaust gas gradually disappears. Correspondingly, the concentration detection module will detect the concentration value of harmful substances in the exhaust gas discharged from the purified liquid, and make an alarm reminder in real time. The purified liquid can be replaced through the liquid outlet 14 and the liquid inlet 13.

[0028] Preferably, see Figure 2 , Figure 3 , Figure 4 The partition assembly includes an upper partition 27 and a lower partition 28 whose edges are connected to the inner wall of the tank body 10, and a volute partition 29 for forming a flow passage is provided between the upper partition 27 and the lower partition 28. An upper opening 30 is formed at the edge of the upper partition 27, and an annular lower opening 31 is formed at the center of the lower partition 28. The upper opening 30 and the lower opening 31 are both connected to the flow passage.

[0029] After the exhaust gas is stirred by the stirring assembly and further contacts with the purification liquid, it enters the flow passage through the lower opening 31 at the center of the lower partition 28, and flows through the upper opening 30 at the edge of the upper partition 27 to the purification liquid on the upper side of the partition assembly and is discharged. The exhaust gas flows in the flow passage in a spiral trajectory, extending the flow distance of the exhaust gas and its contact time with the purification liquid. At the same time, the exhaust gas collides with the upper partition 27, the lower partition 28 and the spiral partition 29, so that the harmful substances in the exhaust gas are in full contact with the purification liquid, thereby improving the absorption and purification effect of the harmful substances in the exhaust gas. At the same time, the purification liquid that has absorbed the harmful substances flows in the flow passage in a spiral trajectory, extending the flow distance of the purification liquid that has absorbed the harmful substances, thereby slowing down the speed at which the purification liquid on the upper side of the partition assembly is contaminated.

[0030] Among them, see Figure 4The upper baffle 27, the lower baffle 28 and the volute baffle 29 are arranged correspondingly to form a volute-shaped flow passage. A plurality of upper openings 30 are arranged at intervals along the circumference of the upper baffle 27, and no upper opening 30 is arranged at the outlet of the flow passage, which prolongs the flow stroke of the exhaust gas and its contact time with the purification liquid, thereby improving the absorption and purification effect of harmful substances in the exhaust gas; at the same time, the flow stroke of the purification liquid that absorbs harmful substances is extended, and the speed at which the purification liquid on the upper side of the partition component is polluted is slowed down.

[0031] The upper end of the high-pressure air pipe 21 is arranged outside the tank body 10 and is provided with a flange, and is connected to an exhaust gas booster device, so that the exhaust gas discharged from the storage tank has a certain pressure and is transported to the high-pressure air pipe 21. The high-pressure air pipe 21 is integrally formed with the upper partition 27 and passes through the lower annular lower opening 31 in the center of the lower partition 28. The lower end of the high-pressure air pipe 21 is closed and close to the bottom of the tank body 10.

[0032] A shaft sleeve 32 is disposed between the upper partition plate 27 and the lower partition plate 28 , and the rotating shaft 26 is rotatably disposed in the shaft sleeve 32 .

[0033] Preferably, see Figure 2 , Figure 3 The lower partition 28 is a conical plate with a larger upper portion and a smaller lower portion. A transverse plate 33 is provided on the high-pressure air pipe 21 , and the transverse plate 33 is disposed between the lower partition 28 and the stirring assembly.

[0034] After the exhaust gas is stirred by the stirring assembly and further contacts with the purification liquid, it flows from the bottom of the horizontal plate 33 to the top thereof, and flows along the lower surface of the lower partition 28 to the lower opening 31 to enter the flow passage, further extending the flow stroke of the exhaust gas and its contact time with the purification liquid, and improving the absorption and purification effect of harmful substances in the exhaust gas; at the same time, the flow stroke of the purification liquid that has absorbed harmful substances is extended, and the speed of the purification liquid on the upper side of the partition assembly being polluted is slowed down. At the same time, because the lower partition 28 is larger at the top and smaller at the bottom, the cross-section of the volute flow passage gradually decreases from the center to the edge. When the exhaust gas and the purification liquid flow along the flow passage, their flow rate gradually changes, so that the harmful substances in the exhaust gas have further contact and absorption with the purification liquid, thereby further improving the absorption and purification effect of harmful substances in the exhaust gas.

[0035] Preferably, see Figure 4 A plurality of spoilers 34 are correspondingly provided on both sides of the volute partition 29 .

[0036] The spoiler 34 will temporarily change the flow direction of the exhaust gas and the purified liquid in the volute flow passage, achieve the spoiler effect on the exhaust gas, and make the exhaust gas and the purified liquid have further contact and absorption. In the flow passage, the corresponding spoiler 34 extends from one side of the volute partition 29 to the other side, and the spoiler 34 forms an angle with the tangent of the volute partition 29 to facilitate the flow of the exhaust gas and the purified liquid.

[0037] Preferably, see Figure 2 , Figure 3 The stirring assembly includes a stirring blade 35 and a spiral blade 36. A plurality of stirring blades 35 are arranged at intervals along the circumference of the rotating shaft 26. Two spiral blades 36 with opposite rotation directions are respectively arranged on the upper and lower sides of the stirring blade 35. The rotating shaft 26 rotates so that the spiral blade 36 pushes the exhaust gas and the purified liquid toward the stirring blade 35.

[0038] The rotating shaft 26 rotates, so that the spiral blades 36 on the upper side push the upper exhaust gas and purified liquid downward to the stirring blades 35, and the spiral blades 36 on the lower side push the lower exhaust gas and purified liquid upward to the stirring blades 35. During the pushing of the spiral blades 36 and the rotation of the stirring blades 35, the exhaust gas and the purified liquid can be stirred and mixed to produce further contact and absorption effects, while extending the flow distance of the exhaust gas and its contact time with the purified liquid, thereby improving the absorption and purification effect of harmful substances in the exhaust gas; at the same time, the flow distance of the purified liquid that has absorbed the harmful substances is extended, thereby slowing down the speed at which the purified liquid on the upper side of the partition component is contaminated.

[0039] The rotating shaft 26 and the stirring assembly can be provided in multiple groups to improve the stirring efficiency of the purified liquid and the exhaust gas. The stirring blade 35 can be provided vertically or at a certain angle to the vertical direction, and different forms of the stirring blade 35 can also be selected according to the actual application.

[0040] Preferably, a disturbing body 37 corresponding to the stirring assembly is provided on the inner wall of the tank body 10 .

[0041] Among them, the disruptor body 37 can be a plurality of spaced-apart raised structures, or an integrated structure with a wavy surface, or a disruptor body 37 can be set at a corresponding position of the high-pressure air pipe 21, so as to cooperate with the stirring component to produce a disruptive effect on the exhaust gas and the purified liquid, thereby improving the stirring and mixing effect.

[0042] Preferably, see Figure 2 , Figure 5 A plurality of injection holes 23 are arranged at intervals along the circumference of the contraction tube 22. The diameter of the contraction tube 22 is smaller than the diameter of the high-pressure gas pipe 21. A ring body 39 is sleeved on the contraction tube 22. A uniformly distributed groove 40 connected to the injection holes 23 is opened in the ring body 39. The input end of the pump body 24 extends into the liquid surface, and the output end is connected to the uniformly distributed groove 40.

[0043] The high-pressure air pipe 21 introduces the waste gas and passes it into the contraction tube 22 with a reduced diameter, so that the flow rate of the waste gas here increases, and collides and contacts with the purification liquid sprayed out at a high speed, thereby improving the absorption and purification effect of the purification liquid on harmful substances such as asphalt smoke and benzopyrene in the waste gas. In addition, the pressure at the corresponding position of the contraction tube 22 is reduced. Under the action of atmospheric pressure, the pump body 24 is cooperated to realize mixed pumping of the purification liquid, increase the spraying speed of the purification liquid, and thus improve the absorption and purification effect of harmful substances in the waste gas.

[0044] Among them, the upper end of the shrink tube 22 is connected to the upper high-pressure air pipe 21 through a tapered tube with a larger upper part and a smaller lower part, and the lower end of the shrink tube 22 is connected to the lower high-pressure air pipe 21 through a tapered tube with a smaller upper part and a larger lower part, so that the connection between the shrink tube 22 and the high-pressure air pipe 21 is smoother, and the exhaust gas shrinks through the tapered tube on the upper side to flow to the shrink tube 22 to produce contact and absorption effect with the purification liquid, and then diffuses and flows out through the tapered tube on the lower side.

[0045] Preferably, the number of the injection holes 23 is 3.

[0046] The axis angle between adjacent injection holes 23 is 120°, which improves the purification liquid injection efficiency while avoiding the formation of injection holes 23 with overlapping axes, thereby preventing the purification liquid sprayed from the current injection hole 23 from being affected by the purification liquid sprayed from other injection holes 23, so that the spray speed, spray volume and spray range of the purification liquid tend to be stable.

[0047] Preferably, the top of the tank body 10 is open and provided with a cover plate 15 , on which a pump body 24 and a motor 16 are provided, and an output end of the motor 16 is connected to a rotating shaft 26 .

[0048] The connection between the cover plate 15 and the top of the tank body 10 may be a snap connection or a bolt connection.

[0049] Preferably, see Figure 2 , Figure 3 A limiting protrusion 17 is formed on the inner wall of the tank body 10 , and a corresponding limiting groove 18 is formed on the lower surface of the lower partition 28 .

[0050] The limiting protrusions 17 and the limiting grooves 18 are preferably arc-shaped, and multiple groups can be correspondingly arranged at intervals along the circumference of the tank body 10, and the shapes of the two cooperate with each other to achieve a detachable connection between the partition assembly and the tank body 10, and to achieve a limiting effect on components such as the partition assembly and the high-pressure air pipe 21.

[0051] The working principle of the present invention is as follows:

[0052] When the waste gas introduced by the high-pressure gas pipe 21 passes through the contraction tube 22, the flow velocity increases and the pressure decreases. The pump body 24 cooperates to transport the purified liquid in the tank body 10 to the injection hole 23 and sprays it toward the waste gas. Since the relative speed between the gas and liquid phases is very large, the high-pressure waste gas collides and contacts with the sprayed purified liquid. The purified liquid wets and captures harmful substances such as asphalt smoke and benzopyrene in the waste gas, and produces condensation and absorption effects.

[0053] The purified liquid that has absorbed harmful substances is passed into the purified liquid at the bottom of the tank body 10 from the side hole 25 on the high-pressure gas pipe 21 along with the waste gas. The motor 16 drives the rotating shaft 26 to rotate, so that the upper spiral blade 36 pushes the waste gas and purified liquid at the upper part downward to the stirring blade 35, and the lower spiral blade 36 pushes the waste gas and purified liquid at the lower part upward to the stirring blade 35. In the process of the spiral blade 36 pushing and the stirring blade 35 rotating, the waste gas and the purified liquid can be stirred and mixed to produce further contact and absorption effects.

[0054] After that, the exhaust gas flows from the bottom of the horizontal plate 33 to the top thereof, and then enters the flow passage through the lower opening 31 at the center of the lower partition 28, and flows through the upper opening 30 at the edge of the upper partition 27 to the purified liquid on the upper side of the partition assembly, and is discharged from the exhaust port 11. The exhaust gas flows in the flow passage in a spiral trajectory, and cooperates with the short-term deflection and turbulence effect of the spoiler 34, so that the harmful substances in the exhaust gas and the purified liquid have further contact and absorption, extending the flow stroke of the exhaust gas and its contact time with the purified liquid, further improving the absorption and purification effect of the harmful substances in the exhaust gas, and at the same time extending the flow stroke of the purified liquid that absorbs the harmful substances, slowing down the speed at which the purified liquid on the upper side of the partition assembly is contaminated, so that the purified liquid pumped by the pump body 23 can maintain cleanliness for a long time, ensuring the effect of purification through collision contact between the exhaust gas and the purified liquid;

[0055] The flow path of the exhaust gas in the tank 10 is as follows: Figure 2 Indicated by the arrow.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A coal tar processing tank waste gas treatment device, wherein a tank body (10) containing a purified liquid is provided with an exhaust port (11), characterized in that: A high-pressure air pipe (21) for conveying waste gas is provided in the tank body (10), a contraction tube (22) is formed on the high-pressure air pipe (21) above the liquid level, a spray hole (23) is provided on the contraction tube (22), and a pump body (24) for pumping purified liquid to the spray hole (23) is provided on the tank body (10); a side hole (25) is provided on the high-pressure air pipe (21) below the liquid level so that the waste gas is conveyed to the bottom of the tank body (10) and fully contacts with the purified liquid, a partition component is provided between the high-pressure air pipe (21) and the tank body (10), a flow passage is formed in the partition component to extend the flow range of the waste gas and the purified liquid, a rotating shaft (26) is provided in the tank body (10), and a stirring component is provided on the rotating shaft (26) at the lower side of the partition component; The stirring assembly comprises a stirring blade (35) and a spiral blade (36), wherein a plurality of stirring blades (35) are arranged at intervals along the circumference of the rotating shaft (26), and two spiral blades (36) with opposite rotation directions are respectively arranged on the upper and lower sides of the stirring blade (35), and the rotating shaft (26) rotates so that the spiral blade (36) pushes the exhaust gas and the purified liquid toward the stirring blade (35); A plurality of injection holes (23) are arranged at intervals along the circumference of the contraction tube (22); the diameter of the contraction tube (22) is smaller than the diameter of the high-pressure gas pipe (21); a ring body (39) is sleeved on the contraction tube (22); a uniformly distributed groove (40) communicating with the injection holes (23) is provided in the ring body (39); the input end of the pump body (24) extends into the liquid surface, and the output end is communicated with the uniformly distributed groove (40).

2. The coal tar processing tank waste gas treatment device according to claim 1 is characterized in that: The partition assembly comprises an upper partition (27) and a lower partition (28) whose edges are connected to the inner wall of the tank body (10); a volute partition (29) for forming a flow passage is provided between the upper partition (27) and the lower partition (28); an upper opening (30) is formed at the edge of the upper partition (27); and an annular lower opening (31) is formed at the center of the lower partition (28); and both the upper opening (30) and the lower opening (31) are connected to the flow passage.

3. The coal tar processing tank waste gas treatment device according to claim 2 is characterized in that: The lower partition (28) is a conical plate with a larger upper portion and a smaller lower portion. A transverse plate (33) is provided on the high-pressure air pipe (21), and the transverse plate (33) is arranged between the lower partition (28) and the stirring assembly.

4. The coal tar processing tank waste gas treatment device according to claim 2 is characterized in that: A plurality of spoilers (34) are correspondingly arranged on both sides of the volute partition (29).

5. The coal tar processing tank waste gas treatment device according to claim 1, characterized in that: A disturbing body (37) corresponding to the stirring assembly is provided on the inner wall of the tank body (10).

6. The coal tar processing tank waste gas treatment device according to claim 1, characterized in that: The number of the injection holes (23) is 3.

7. The coal tar processing tank waste gas treatment device according to claim 1 is characterized in that: The top of the tank body (10) is open and provided with a cover plate (15), on which a pump body (24) and a motor (16) are provided, and the output end of the motor (16) is connected to a rotating shaft (26).

8. The coal tar processing tank waste gas treatment device according to claim 2 is characterized in that: A limiting protrusion (17) is formed on the inner wall of the tank body (10), and a corresponding limiting groove (18) is formed on the lower surface of the lower partition (28).

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